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Chapter 23: Problem 29

What is meant by the term sequestering agent? What properties make a substance an effective sequestering agent?

Short Answer

Expert verified
Answer: A sequestering agent, also known as a chelating agent, is a chemical compound that binds and removes metal ions from a solution by forming stable, water-soluble complexes. For a sequestering agent to be effective, it should have the properties of selectivity, stability, water solubility, biodegradability, and non-toxicity.

Step by step solution

01

Define Sequestering Agent

A sequestering agent, also known as a chelating agent, is a type of chemical compound that forms stable, water-soluble complexes with metal ions, effectively binding and removing them from a solution. These agents can prevent metal ions from reacting with other substances and causing precipitation or other undesirable effects.
02

Describe Properties of an Effective Sequestering Agent

An effective sequestering agent should possess the following properties: 1. Selectivity: The ability to specifically target and bind to the desired metal ions without affecting other ions or components in the solution. 2. Stability: A strong and stable binding capability with the targeted metal ions to form complexes that can resist breaking apart under normal conditions. 3. Water Solubility: The complexes formed should be soluble in water, making them easy to dissolve and remove from the solution. 4. Biodegradability: For environmentally friendly agents, biodegradability is essential to minimize ecological impacts when discharged in wastewater. 5. Non-toxicity: A good sequestering agent should be non-toxic to humans, animals, and the environment.

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Most popular questions from this chapter

When a transition metal ion such as \(\mathrm{Cu}^{2+}\) is incorporated into a metalloenzyme, is the formation constant likely to be much greater than one \((K > > 1)\) or much less than one \((K < < 1) ?\) \(\mathrm{Cu}^{2+}+\) protein \(\rightleftharpoons\) metalloenzyme \(\quad K=\frac{[\text { metalloenzyme }]}{\left[\mathrm{Cu}^{2+}\right][\text { protein }]}\)

What do the prefixes cis-and trans-mean in the context of an octahedral complex ion?

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